Make sure the correct luckstone is the prize

The first generated luckstone is marked as the prize in mines' end.
Make sure we generate the intended one first, before any other
(possibly randomly generated) luckstones.

dat/mines.des

@@ -1042,6 +1042,7 @@ OBJECT:('!',"booze"),(10,09)
 OBJECT:('!',"object detection"),(10,09)
 # Objects
 # The Treasure chamber...
+OBJECT:('*',"luckstone"),(70,05)
 OBJECT:('*',"diamond"),(69,04)
 OBJECT:'*',(69,04)
 OBJECT:('*',"diamond"),(69,04)
@@ -1058,7 +1059,6 @@ OBJECT:('*',"ruby"),(70,05)
 OBJECT:('*',"amethyst"),(70,05)
 OBJECT:'*',(70,05)
 OBJECT:('*',"amethyst"),(70,05)
-OBJECT:('*',"luckstone"),(70,05)
 # Scattered gems...
 OBJECT:'*',random
 OBJECT:'*',random
@@ -1147,24 +1147,24 @@ STAIR:(42,8),up
 WALLIFY
 
 # Objects
-OBJECT:('*',"diamond"),random
-OBJECT:'*',random
-OBJECT:('*',"diamond"),random
-OBJECT:'*',random
-OBJECT:('*',"emerald"),random
-OBJECT:'*',random
-OBJECT:('*',"emerald"),random
-OBJECT:'*',random
-OBJECT:('*',"emerald"),random
-OBJECT:'*',random
-OBJECT:('*',"ruby"),random
-OBJECT:'*',random
-OBJECT:('*',"ruby"),random
-OBJECT:('*',"amethyst"),random
-OBJECT:'*',random
-OBJECT:('*',"amethyst"),random
 OBJECT:('*',"luckstone"),$place[0]
 OBJECT:('*',"flint"),$place[1]
+OBJECT:('*',"diamond"),random
+OBJECT:'*',random
+OBJECT:('*',"diamond"),random
+OBJECT:'*',random
+OBJECT:('*',"emerald"),random
+OBJECT:'*',random
+OBJECT:('*',"emerald"),random
+OBJECT:'*',random
+OBJECT:('*',"emerald"),random
+OBJECT:'*',random
+OBJECT:('*',"ruby"),random
+OBJECT:'*',random
+OBJECT:('*',"ruby"),random
+OBJECT:('*',"amethyst"),random
+OBJECT:'*',random
+OBJECT:('*',"amethyst"),random
 OBJECT:'?',random
 OBJECT:'?',random
 OBJECT:'?',random